Question 1

What is CHIME syndrome?

Accepted Answer

CHIME syndrome is a rare condition that affects several parts of the body, including the eyes, heart, skin, and brain. It is classified as an ectodermal dysplasia because it involves tissues that develop from the ectoderm, the outer layer in early embryonic life. The defining features of this syndrome are eye abnormalities called colobomas, heart defects, skin changes that resemble ichthyosis, intellectual disability, hearing loss, and epilepsy.

People with CHIME syndrome may experience a variety of symptoms that vary from one person to another. The condition is complex due to the involvement of multiple organ systems, which can make understanding and managing the syndrome challenging.

Question 2

What are the symptoms of CHIME syndrome?

Accepted Answer

Common signs and symptoms include ocular colobomas (eye defects), congenital heart defects, skin issues described as ichthyosiform dermatosis, intellectual disability, conductive hearing loss, and epilepsy. These symptoms may differ in severity among people with the condition.

Question 3

What causes CHIME syndrome?

Accepted Answer

CHIME syndrome is caused by mutations in the PIGL gene, which leads to problems with the development of tissues derived from the ectoderm. The genetic changes disrupt normal functions in several body systems, which is why the syndrome presents with multiple features. Detailed genetic risk factors and inheritance patterns were not specified in the provided information. Associated genes include PIGL.

Question 4

How is CHIME syndrome inherited?

Accepted Answer

CHIME syndrome follows an autosomal recessive inheritance pattern. This means a child must inherit a copy of the altered gene from both parents to develop the condition. Parents who each carry one copy typically do not show symptoms.

Question 5

How rare is CHIME syndrome?

Accepted Answer

CHIME syndrome is classified as very rare. The estimated prevalence is approximately <1 in 1,000,000. Because rare disease data can be limited, actual numbers may differ from published estimates.

Question 6

How is CHIME syndrome diagnosed?

Accepted Answer

Information about diagnosis is currently limited for this condition.

Question 7

Are there treatments for CHIME syndrome?

Accepted Answer

Information about treatment is currently limited for this condition.

Question 8

What complications can arise from CHIME syndrome?

Accepted Answer

CHIME syndrome can lead to various complications due to its impact on multiple organ systems. For example, the heart defects may require medical attention or surgery, and the intellectual disability can affect learning and daily activities. Additionally, the skin issues and hearing loss can also present challenges in everyday life.

Question 9

How does CHIME syndrome affect daily life for patients?

Accepted Answer

Living with CHIME syndrome can be challenging because it affects several body systems. Patients may need special support for learning due to intellectual disabilities, and they might require regular check-ups for heart health. Managing skin issues and hearing loss can also impact daily activities, making it important for families to seek appropriate care and support.

Question 10

What is the life expectancy for someone with CHIME syndrome?

Accepted Answer

The life expectancy for individuals with CHIME syndrome is not clearly defined in the available information. Since the condition affects various organs, the overall health and management of symptoms can influence life expectancy. Regular medical care and monitoring can help improve quality of life and potentially extend longevity.

Question 11

Are there specific specialists that should be involved in the care of someone with CHIME syndrome?

Accepted Answer

Yes, individuals with CHIME syndrome may benefit from a team of specialists. This can include a cardiologist for heart issues, an ophthalmologist for eye problems, and a neurologist for epilepsy management. Additionally, educational specialists may help address learning needs related to intellectual disabilities.

Organ System	Phenotype Count	Example Features
Brain and nerves	11	Bilateral tonic-clonic seizure, Seizure, Gait ataxia
Arms and legs	6	Large hands, Contracture of the proximal interphalangeal joint of the 5th finger, Clinodactyly of the 5th finger
Head and neck	6	Cleft lip, Coarse facial features, Cleft palate
Eyes	5	Strabismus, Retinal coloboma, Nystagmus
Muscles	4	Low muscle tone (hypotonia), Contracture of the proximal interphalangeal joint of the 5th finger, Brain shrinkage (cerebral atrophy)
Lab test results	3	Elevated circulating alkaline phosphatase concentration, Elevated circulating aspartate aminotransferase concentration, Elevated circulating alanine aminotransferase concentration
Skin	3	Dry skin, Palmoplantar hyperkeratosis, Dry, scaly skin (ichthyosis)
Bones and joints	2	Contracture of the proximal interphalangeal joint of the 5th finger, Joint contracture of the hand
Lungs and breathing	2	Peripheral pulmonary artery stenosis, Pulmonary artery stenosis
Heart and blood vessels	2	Ventricular septal defect, Subvalvular aortic stenosis
Ears	1	Conductive hearing impairment
Digestive system	1	Enlarged liver (hepatomegaly)
Growth and development	1	Growth abnormality

Kisho

CHIME syndrome

Overview

Clinical Presentation

Explore clinical features

Genetic Landscape

Diagnosis

Prognosis

Research Landscape

Recent Publications

Medical References

External Resources

OMIM

Orphanet

GARD

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

CHIME syndrome

Overview

Clinical Presentation

Explore clinical features

Genetic Landscape

Diagnosis

Prognosis

Research Landscape

Recent Publications

Medical References

External Resources

OMIM

Orphanet

GARD

Related Diseases

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

What is CHIME syndrome?

What are the symptoms of CHIME syndrome?

What causes CHIME syndrome?

How is CHIME syndrome inherited?

How rare is CHIME syndrome?

How is CHIME syndrome diagnosed?

Are there treatments for CHIME syndrome?

What complications can arise from CHIME syndrome?

How does CHIME syndrome affect daily life for patients?

What is the life expectancy for someone with CHIME syndrome?

Are there specific specialists that should be involved in the care of someone with CHIME syndrome?